1 //===-- Unittests for strndup ---------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8
9 #include "src/string/strndup.h"
10 #include "test/UnitTest/Test.h"
11 #include <stdlib.h>
12
TEST(LlvmLibcstrndupTest,EmptyString)13 TEST(LlvmLibcstrndupTest, EmptyString) {
14 const char *empty = "";
15
16 char *result = LIBC_NAMESPACE::strndup(empty, 1);
17 ASSERT_NE(result, static_cast<char *>(nullptr));
18 ASSERT_NE(empty, const_cast<const char *>(result));
19 ASSERT_STREQ(empty, result);
20 ::free(result);
21 }
22
TEST(LlvmLibcstrndupTest,AnyString)23 TEST(LlvmLibcstrndupTest, AnyString) {
24 const char *abc = "abc";
25
26 char *result = LIBC_NAMESPACE::strndup(abc, 3);
27
28 ASSERT_NE(result, static_cast<char *>(nullptr));
29 ASSERT_NE(abc, const_cast<const char *>(result));
30 ASSERT_STREQ(abc, result);
31 ::free(result);
32
33 result = LIBC_NAMESPACE::strndup(abc, 1);
34
35 ASSERT_NE(result, static_cast<char *>(nullptr));
36 ASSERT_NE(abc, const_cast<const char *>(result));
37 ASSERT_STREQ("a", result);
38 ::free(result);
39
40 result = LIBC_NAMESPACE::strndup(abc, 10);
41
42 ASSERT_NE(result, static_cast<char *>(nullptr));
43 ASSERT_NE(abc, const_cast<const char *>(result));
44 ASSERT_STREQ(abc, result);
45 ::free(result);
46 }
47
TEST(LlvmLibcstrndupTest,NullPtr)48 TEST(LlvmLibcstrndupTest, NullPtr) {
49 char *result = LIBC_NAMESPACE::strndup(nullptr, 0);
50
51 ASSERT_EQ(result, static_cast<char *>(nullptr));
52 }
53